Fishway inlet system luring grass carp, design method of fishway inlet system luring grass carp and fish luring flow speed calibration device

Abstract

The invention relates to a fishway inlet system luring grass carp, a design method of the fishway inlet system luring the grass carp and a fish luring flow speed calibration device. The fishway inlet system luring the grass carp comprises a fishway arranged in the flow direction of a river and a fishway inlet of the fishway. One side of the fishway and one side of the fishway inlet are close to the river bank on one side of the river. The other sides of the fishway and the fishway inlet are provided with a fish luring water flow channel and a fish luring water flow channel water outlet, wherein the fish luring water flow channel and the fish luring water flow channel water outlet are identical with the fishway and the fishway inlet in direction. According to the fishway inlet system luring the grass carp, the design method of the fishway inlet system luring the grass carp and the fish luring flow speed calibration device, only one stream of fish luring water flow needs to be arranged, and a water flow condition of luring fishes can be created through cooperation of the fish luring water flow and the fishway water flow. Only two water flow parameters need to be calibrated and are the optimum flow speed of the fishway inlet and the optimum rate of the flow speed of the fish luring water flow channel water outlet to the flow speed of the fishway inlet. Compared with other water flow fish luring methods, the two water flow parameter values are definitely provided. The fishway inlet is simple in water flow form and small in project amount. The design method of the fishway inlet system luring the grass carp can be not only directly used for hydraulic design of the fishway inlet for the grass carp but also conveniently popularized to design of fish luring water flows of fishway inlets for other fishes.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows ponds (fish tanks) without any fencing material to capture their catches from rainwater runoff on land where they live). By setting different conditions like optimum fluid rates during entry into these areas along its length, we aim to provide better ways to collect fish caught within them.

Problems solved by technology

This patented technical problem addressed in this patent relates to improving the efficiency of guiding fluid into fish-fishing gates during certain stages when they shouldn't be able to access them due to their poor navigability caused by turbulence on rough surfaces such as rocks near the gate opening.

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